Machine for manufacturing thin rubber articles



Aug. 30, 1932. F. 1.. KlLLlAN 1,874,014

MACHINEFOR MANUFACTURING THINVRUBBEH ARTICLES Filed Jan. 27, 1928 2 sheets-sheet 1 Y ATTORNEY 1932- F. L. KILL-IAN: 1,874,014

MACHINE FOR MANUFACTURING THIN RUBBER ARTICLES Filed Jan. 27, 1928 2 Sheets-Sheet 2 are I 14 7 a 0 4 '1 o 40 7/ 7 q 3 12 23 m m gm 3 l5 4 9/ 5 E TI -J A TTORNE Y V 25 bead rolling element.

Patented Aug. 30, 1932 v FRED n. :KIIQJLIAN, or Anon, 0310 MACHINE non; MAN FACTURING innit RUBBER ARTICLES A pplication filed Januar 27, 19 25.1 Serial .No. 249,909. 7

' This invention relates to new improvements in machines for manufacturing thin rubber articles and has part cular relation to a machine adapted for use in rolling beads on the open ends of toy balloons, rubber gloves, finger cots and other Open ended articles of a similar nature. I

Objects of the invention are to provide van automatic bead rolling device of simple conlofstruction which may be conveniently operated to roll beads with great rapidity which will be eificientin operation and will economically produce beads of uniform cross section. r p j V A further object is to provide a bead rolling device which maybe used tosimultaneously roll beads on a pluralityof forms ro- Vtatablymounted on a dipping boardwithout removing the forms from the board and which may stationary position. ,7 v L An additional object is to provide new and improved means for rotating forms while the same are in operative contact with the Other objects and aims of the invention will be apparent from the following description and from the scope ofprotection indicated by the appended claims. j

The above objects are accomplished by the novel construction, combination and arrangement of parts hereinafter described and illustrated in the accompanying drawings in which I have shown a preferred form of the invention,it beingiunder'stood that the invention is capable of various adaptations and that changes and modifications may be made or resort had to substitutions which come within the spirit of'the invention as set forth in the appended claims. 7 a

In the drawings similar characters of-reference are employed to designate like parts as the same maybe shown inany of the several views and in which r j i s j y Figure 1 is a side elevational viewof a bead rolling machine constructed accordance with this invention,

Figure 2 is a rear elevational view of same,

parts being broken away to more'clearly illustrate the invention,

be used with the board held ina isi 'a hori' zontal, sectional view taken as indicated by the lines33 of Figure 2. o a

Figure 4 is a vertical, sectional view taken as indicated by thelines 4.4 of Figure 8.

' Proceeding now to a detailed description offthe"inventionjwith'reference to the particular adaptation thereof disclosed in the drawings, the numerals 6 and 7 denote upright supports which form the lateralside s \w of the machine frame and the numeral 8denotes a table which is suitably secured to. the

sides 6 and'7. The sides 6' and? are also connected bysuitable cross members 9, 10 and 11 ,as. illustrated in Figure 2. Each of the side members "6 and 7 are provided adjacent the up er end thereof with forwardly projecting portions which'are indicated by the reference characters 6a and 7a. The horizontal table 8 is secured between said brackets 6a and 7Q'SO as to extendacross the forward part of the frame withthe rear edge thereof terminating :inspaced relation to the rear edge of the frame. .The members6 and 7 are provided at points in clo's'e spaced relation to the upper ends thereof with'aXially alined bearings in which is'rotatably mounted ahorizontal shaft 12'. A cylindricalbead rolling element 13 is fixedly secured to the shaft 12. While the bead rolling element 13 is preferablyin the form of a'oylindrical brush, it may be formed of any suitable material. The bead rolling element 13 is positioned inahorizontal plane which is spaced above theplanejof the table 8 and ina vertical plane spaced rearwardly therefrom. v 1 i I The numeral 14 denotes a horizontal shaft which is rotatably mounted in suitable bearings on the side members 6 and 7 and is of suificient'length to project from each side of the machine. The end of the shaft 14 which projects fromthe side 6 is provided with the gear or drive pulley 15 or other means for connecting the shaft. 141 to a source of power: The end "of the shaft 14 which projects from the side 7 is provided with a beveled pinion 16, which is keyed or otherwise fixed thereto. 'llhe numeral 17 denotes a bracket which is secured to the side 7 of the machine by means of the bolts 18 or other suitable means. A

vertical shaft 19 is rotatably mounted in suitable bearings in the bracket 17. The shaft 19 is provided on the lower end thereof with a beveled pinion 20 which is operatively meshed with the beveled pinion 16. The shaft 19 is provided on the upper end thereof with a beveled pinion 21 which is operatively meshed with the beveled pinion 22 which is fixedly secured to the outwardly projecting end of the shaft 12. i

The numeral 23 denotes a bracket whichis provided with depending spaced legs 24 and 25. The spaced legs 24 and 25 areprovided with alined bores in which is rotatably received the shaft 14-. In the drawings Lhave' shown three of the brackets '23thus mounted on-the shaft 24, but it is to be'un'derstood that "any number of brackets maybe employed. Each bracket 23 is provided with a vertical bore in which isrotatably mounted a shaft 26 which projects upwardly at a point abovethe table 8 as hereinafter described. a A wheel 27 isfixedly secured to theupper endof each shaft 26. l/Yhile the wheel 27 I'nay be formed in any suitable manner, it is preferably constructed with a peripheral groove in which is mounted a tire or friction strip 28. Each bracket 23 is provided at a point ad- 'jacent the upper end thereof with a rearward-- ly'projectingboss 29' in which ismounted a headed bolt-30. Thebolt30 projects through a suitable opening in the member9 with the head ofthe bolt 30 spaced rearwardly from said crossmember. A-suitable coil sprin'g 31 'ispositioned between the cross member and "thehe'ad of the bolt. A similar spring 32 is mounted on the bolt 30 for compression between the boss 29 and the cross member 9.

. Each shaft 26 terminates in spaced relation to the shaft 14:.and each shaft 26 is provided row of' upstanding pins 37 which are secured in the board 35 in a double row extending longitudinally thereof. Each form 36 is provided with an axial bore 38 in which is received the pins 37.. Each form 36 is provided adjacent the lower endthereof with a circumferentially extending groove 39. A strip 40 is positioned between the row' of forms with the opposite edges thereof entered in the grooves 39. The strip 49 is suitably secured to the board 35 sothat the forms may be retained on the board 35 and may be freely rotated on the pins In the drawings, I have shown a board 35 of ordinary construction having a double row of forms rotatably mounted thereon, but it is to be understood that any form of supporting member may be used. The form board 35 shown is adapted to be used either singly or collectively in a bed; used to dip said forms in a rubber solution and may be usedto carry the forms through the various steps of manufacture.

In use, the gear 15 1s 'operatively'connected to asource of power, thus rotating the brush 7 13-and rotating each wheel 27; A form board 35 carrying the forms 36,0n which has beenformed the.zunvulcaniz e1d rubber articles ll'is placed on the table 8 so as to be ositioned: longitudinally thereof. The board 35 is then. moved laterally to bring the tire 28 on each wheel 27'intofrictional contact with twoof thegforms 36'. The forms 36 being thus'frictionally engagedjby the rotating members27 are rotated; A further rearward movement ofthe board'35fcauses a compression of the spring 32and brings the lower edge of thearticle ll'into operative engagement with the brush 13. As the forms are rapidlyrotating the brush will engage and rollthe lower edge 'ofthe arti-' ch 411 'upwardly'to form ahead of cylin- "dr'ical' cross section The rapidrotation of the forms causes only a small portion of the article 41 to be rolled upwardly at each'rotation of the form 36 andinsures an even bead freefrom lops or? knots.

In the particular adaptation of the invention shown, the brush 13 ismounted horizontally whereby each form inthe row issimultaneously subjected to I the brush thereby forming means whereby beads of uniform cross section can be rapidly 'and accurately rolled 'on' a plurality of thin rubber' articles without removing the forms fro'm'the dipping board and without-removing'th e'articles from the forms. 1 I

double row'of'forms 36 the forms on one side of the board are firstpresentedto the bead rolling means, the board is then reversed and the forms on theother side thereof are likewise presented to the brush." As both the forms 36' and the brush'13 are being rapidlyrotated and as the boa'rd135 is held in a stationary position duringthe action of the bead rolling"'means,"the beads are very rapidly formed and the board must be held in a stationary position for a very short period of time 1 'While specific bead rolling means for form rotating means are herein shown and de- 'In' 'using the b'oards 35:which'carry a scribed, it isto be understood that any suit- 1 able means may be employed which will function as herein'described and claimed.

Havingthus fully described. the invention with reference to the particular adaptation thereof disclosed in the "drawings what is claimed as new and patentableQis:

1; In apparatus "for manufacturing rubber articles, a frame, a cylindrical brush mounted on said frame, means rotating said brush, a form supporting member, forms rotatably mounted in a straight row on said member, friction Wheels mounted on said frame for rotating said forms, means to rotate said Wheels, said Wheels positioned to simultaneously rotate said forms when the same are brought into contact With said brush.

2. In apparatus for rolling'beads on thin rubber articles, a support, a cylindrical brush, form rotating Wheels, means to simultaneously rotate'said Wheels and brush, V a form carrying member, forms rotatably mounted in a straight row on said member, said forms adapted to be simultaneously brought into operative contact With said brush and Wheels When said form carrying 20 member is positioned on said support and moved laterally thereto.

In testimony whereof I have hereunto set my hand.

FRED L. KILLIAN. 

